Growing large-area single-grain graphene layers

Researchers demonstrate that single-grain growth of graphene crystals can be achieved over a large, macroscale, area. Specifically, the team shows that graphene flakes, nucleated over a polycrystalline graphene film, synchronize during growth so as to ultimately yield a common crystal orientation at the macroscale. The phenomenon of self-alignment of graphene grains during their growth, which the team discovered experimentally, has never been observed before - and at this time the scientists don't have a good model for the underlying physics which leads to this effect.